Jory Hogeveen

As easy as it gets. Add column classes to widgets with a select box, check whether the widget is the first, and save!
I’ve built this plugin for the Genesis Framework, though it will work with any theme that uses the (old) Bootstrap column classes.
You can also add your own classes through various filters to use this plugin with your theme’s grid framework.
<h4>Compatibility (IMPORTANT!)</h4>
This plugin does NOT add CSS for these columns. It ONLY adds the column classes to your widgets. The actual CSS should be added in your theme.
<h4>Filter: `genesis_widget_column_classes`</h4>
Allows you to change the available column classes
Parameters: <code>array</code> Default column classes. 
Return: <code>array</code> Array of column classes.
<h4>Filter: `genesis_widget_column_classes_capability`</h4>
Change the capability required to modify column classes. 
Since 1.2.2
Default: <code>edit_theme_options</code> 
Parameters: <code>string</code> The default capability. 
Return: <code>string</code> The new capability.
<h4>Filter `genesis_widget_column_classes_select_multiple`</h4>
Allow multiple classes to be selected. 
Since 1.3 
Return: boolean.
You can use these filters inside your theme functions.php file or in a plugin. 
You can find me here:
<ul>
<li><a href="http://www.keraweb.nl/" title="Keraweb" rel="nofollow ugc">Keraweb</a></li>
<li><a href="https://github.com/JoryHogeveen/genesis-widget-column-classes/" rel="nofollow ugc">GitHub</a></li>
<li><a href="https://nl.linkedin.com/in/joryhogeveen" title="LinkedIn profile" rel="nofollow ugc">LinkedIn</a></li>
</ul>

Genesis Widget Column Classes

WEN Themes

WEN Responsive Columns provides you with a shortcode that will help display columnized content. Just one shortcode <code>[wrc_column]</code> is in effect for convenience but the sole is enough for generating multiple mixes of columns. Grids could be 2, 3, 4, 5 or 12 and you can easily add columns using button in the editor. Select your desired layout and use shortcode. That’s it !
Plugin: <a href="http://wenthemes.com/item/wordpress-plugins/wen-responsive-columns/" rel="nofollow ugc">Home Page</a>
If you like this plugin, please <a href="https://wordpress.org/support/view/plugin-reviews/wen-responsive-columns" rel="ugc">rate and review</a>. 
If you have any question, suggestion or issue, please <a href="https://wordpress.org/support/plugin/wen-responsive-columns" rel="ugc">post here</a>.

WEN Responsive Columns

Easily display columnized content in your pages or posts.

Genesis Widget Column Classes vs WEN Responsive Columns